No, an open circuit voltage of 12.2 for a flooded battery usually means about
50%, or for a cruiser, time to recharge. Under load, of coarse, 12.2 could mean
about 80%; IIRC my house bank will drop to about 12.25V when the fridge is
running with its 30 Amp load.

http://www.trojanbattery.com/custome...erymaint4.html
http://www.rollsbattery.com/Bulletins/600.htm

"Wayne.B" wrote in message
...
On Mon, 4 Oct 2004 17:10:57 -0400, "Doug Dotson"
wrote:

Actually, half capacity for a liquid electrolyte battery is 12.2 volts.

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Under what meausurement conditions? Can you cite the source of your
information? 12.2 volts (resting condition) is only 20% discharged
in my experience.